.one {
    width: 300px;
    height: 300px;
    background: orange;
}

.two {
    width: 200px;
    height: 200px;
    background: skyblue;
}

.three {
    width: 100px;
    height: 100px;
    background: orangered;
}

.ps {
    position: absolute;
}

.drag-one {
    width: 100px;
    height: 100px;
    background: orange;
}

.drag-two {
    width: 100px;
    height: 100px;
    background: skyblue;
}
